﻿/*
    LICENCE
    
        Easing Equations v2.0
        September 1, 2003
        (c) 2003 Robert Penner, all rights reserved. 
        This work is subject to the terms in http://www.robertpenner.com/easing_terms_of_use.html.
        
*/    

package pegas.transitions.easing 
{
    /**
     * The Strong class defines three easing functions to implement motion with ActionScript animations. 
     */
    public class Strong
    {
        public static function easeIn ( t:Number, b:Number, c:Number, d:Number ):Number 
        {
            return c*(t/=d)*t*t*t*t + b ;
        }
        
        public static function easeInOut ( t:Number, b:Number, c:Number, d:Number ):Number 
        {
            if ((t/=d/2) < 1) 
            {
                return c/2*t*t*t*t*t + b ;
            }
            return c/2*((t-=2)*t*t*t*t + 2) + b ;
        }
        
        public static function easeOut ( t:Number, b:Number, c:Number, d:Number ):Number 
        {
            return c*((t=t/d-1)*t*t*t*t + 1) + b ;
        }
    }
}
